Regulator.



PATENTED AUG. 18, 1908.' v0. SAUGSTAD. REGULATOR.

APPLIOATION FILED 1330.9, 1904.

MENTOR 45 ATTORNEYS WITNESSES:

v UNITED srn'rns PATENT OFFICE.

OLAF SAUGSTAD, OF BLAINFIELD,

H; '& M. AUTOMATIC REGULATOR COMPANY, A CORPORATION OF NEW YORK.

REGULATOR.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application tiled December 9,1904. Serial No. 236,112.

zen of the United States of America, and res1-- dent of Plainfield, county of Union, and State of New Jersey, have invented certain new and useful Improvements in Regulators, of

-whicl1 the following is-a specification, refervence being had to the accompanying draw' in s,form1ng a part thereof.

- 'nvention relates to improvements in ators and particularly to improvements in thermostatic regulators of the type emhotwater regulation.

, My invention consists in certain novel details/of construction and combination of parts as will hereinafter be more fully point? ln'orderiimt In invention may be clearly understood, 1 wili 'describe an embodiment thereofwitli feierenceto the accompanying drawings. illustrating same, and Will then point out the novel features in claims.

In the drawings: Figure 1 is a view in central lon itudinal section through a regulator embodying my invention, and Fig. 2 is an end view of same.

The device comprises a casing 1, to which is attached one end of a tube 2. A rod 3 is arranged within the tube, and is secured theretoat the outer end 4 thereof. The connectibn is a rigid one unyieldingly connect 1ng therod and tube together at this end, but therod and tube are composed of ma- "njerialshaving different coeflicients of on an- 1 casing sion, and are permitted relative lon itm inal expansion and contraction whereby their inner ends, ortha't end opposite to the end 4, may move with relation to each other.

valve seat 5 is mounted in the casing 1 in a line with the thermostatic tube and rod -2 and 3. This valye seat being mounted'm the casing,is held relatively stationary with respect to the endof the tube 2 during the normal operation of the device, but the con-r nection between the valve seat 5 and easing 1" is preferably an adjustable one, whereby l adjustment thereof may be obtained ydesired. For this purpose I preferg'ly'screw-thread the valve seat into place in the" casing, as shown, and, in order to secure a ti ht joint between the valve seat and provide two stuffing boxes 6 and-'7, one without and the other within the casing,

as shown. r

. The valve seat 5 carries a valve 8, the stem 9 of which is received within a hollow portion of the said seat. The valve 8 is permitted to NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

move longitudinally, a spring 10 exerting force in a direction to move the valve away from its seat. The rod 3 is provided at its inner end with an o crating plug 11, the outer end of which aliuts against the outer face of the valve 8. The plug 11 is mounted in a hollow portion 12 of the rod 3, and the outer movement thereof is limited by means of a head or ca 13, which engages a shouldered portion of the said plug. bears against the plug and normally tends to force same outward. The force exerted by the s ring 14 is greater than the force exerted by t e spring 10, so that, when the two springs are opposed, the spring 10 will be com ressed compress.

The casin r forming a c amber 15, in open communica- -tion through a passage 16 with a connection 17 arran ed to connect with a source of supply of huid pressure. All oppositely ar ranged connection 18 connects through a passage 19, through the valve seat and past the valve face into the said chamber when the valve is, open, and is closed from such communication when the said valve is closed. The valve seat at its outer end carries a pointer 20 rigidlysecured thereto by means of a nut 21, the said pointer arranged to indicate theadjustment given to the valve seat. In operation, thedevice is suitably mounted wit thethermostatic member immersed in the fluid intended to be regulated, which may for instance be water. The connection 17 will be connected with a supply of fluid pressure, and the connection 18 with an 0p-v 6 sired tom erature, and when the temperature falls elow this oint the greater con- A spring 14 to the fullest extent permitted by t e-parts, before the spring 14 begins to 1 is hollow, the int/erior thereof traction of the tube with respect to the bar 3 will cause the valve seat to be drawn toward the operating plug of the rod 3 unti the valve is. forced to its seat. This will prevent motive fluid passing the valve seat froin the connection 17 'to the 11 carried by the free end connection 18, and the o crating device (not shown) will be relieved o fluid pressure, and will be caused in any well known manner to tively, the spring too en under tension of the s rin 10. Fluid P l e Q seesaw admit heat to raise the temperature of the two thermostatic members comprising a fluid regulated. As the temperature of the tube and a bar connected together unyieldfluid in which the thermostat is immersed ingly at one end, said tube and bar arranged rises above the iredetermined point, the one within the other andcomposed of maparts will move re atively in an opposite diterials having different coeiiicients of ex anrection, the operating plug 14 being drawn sion, of a casing to which the free end 0 the away from the valve and the valve permitted said tube is secured, a valve seat adjiistably mounted in said casing and projecting from the exterior to the interior thereof, a valve mounted to move longitudinally in said valve seat, an operating plug mounted in said thermostatic bar in a line with said valve and adapted to opposin springs for said operating plug and said valve, tending to move them toward each other, the spring for said 0 crating plug exerting a greater force than tie force exerted by the spring for said valve, and means for limiting the outward movement of said operating plug.

3. In a rcgulator, the combination with a casing, a thermostatic tube secured thereto, a bar arranged within the tube and secured unyieldingly thereto at its outer end, an

under pressure will then be 8,( nitted through the connection 17, past the face of the valve 8 to the connections 18, and thence to the heatcontroller so as to close the admission of eat.

Should the temperature of the fluid in which the thermostat is immersed fall considerably below the. point at which the device is set for closing the valve, further relative contraction between the thermostatic members will take place and the plu 11 will be forced into the recess 12 against t e ressure of the s )ring 14. The pressure 0 the spring 14 will, however, tend to keep the I valve firmly to its seat, but will relieve undue pressure upon the parts due to this excessive I change of temperature.

.What I claim is:

1. 'In a regulator, the combination with two thermostatic members comprising a l tube and a bar unyieldingly connected together at one end, said tube and bar arranged one within the other, and composed of materials having different coefficients of expansion, of a valve seat secured stationary with respect to said tube, a valve fitted to an operating member the said thermostatic bar, said member yieldingly sup orted in said bar but 'mited in its outward movement with respect thereto, and opposing springsfor. said valve and said 0 crating member respecor said operating member a force greater than the spring for said said bar, but limitedin its outward move ment with respect thereto, a plug mounted in said casing in a line with members, said plug having a screw-threaded connection therewith whereby adjusted toward and ating member, and provided with a valve seat, a valve mounted in said plug and carseat, a spring housed valve away om its seat, said s )ring 0 pos ing, but overbalanced by, the torce 0 operating member under the influence of its yielding movements. I in arrangedto exert .OLAF OAUGSTAD the orce exerted by valve.

2 In a regulator, the; combination with Witnesses:

JOSEPH '1. WADSWORTH, D. HOWARD HAYWOOD.

operating member yieldingly supported in' it may be away from said operoperating Within said lug and arranged to foreesaid said.

abut against same, l

said thermostatic I ried thereby, said valve arranged for. 00- 

